Novel N-(4-piperidinyl)-N-phenylamides and -carbamates having very potent analgesic activity, methods of preparing same and useful intermediates therefor.
THE NEW PROCESS FOR PRODUCING N-PHENYL-N-(4-PIPERIDINYL) AMIDE DERIVATIVES SUCH AS REMIFENTANIL AND CARFENTANIL
申请人:Bioka s. r.o.
公开号:EP3199523A1
公开(公告)日:2017-08-02
Disclosed is a process for the preparation of the compound of formula (I):
which comprises reacting a compound of formula (II):
with acylating agent of formula (IV) in the presence of orthoester of formula (III) in an aprotic solvent:
The process may be used for synthesizing derivatives of fentanyl. Specifically set out are pathways for synthesizing remifentanil and carfentanil. The disclosed process require fewer steps and produce a greater yield of products than methods reported in the prior art.
A compound having a partial structure represented by the formula (A)
(wherein ring Xa represents a nitrogen-containing ring and R represents optionally substituted amino) or a salt thereof. The compound or salt is highly effective in regulating neuromedin U receptors and is useful as a preventive/therapeutic agent for hypertension, etc.
A compound having a partial structure represented by the formula (A)
(wherein ring Xa represents a nitrogen-containing ring and R represents optionally substituted amino) or a salt thereof. The compound or salt is highly effective in regulating neuromedin U receptors and is useful as a preventive/therapeutic agent for hypertension, etc.
部分结构由式(A)表示的化合物
(其中环 Xa 代表含氮环,R 代表任选取代的氨基)的化合物或其盐。该化合物或其盐能有效调节神经生长素 U 受体,可用作高血压等疾病的预防/治疗剂。